Inventories (Details) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Inventories [Abstract]
Raw materials	$ 5,744,000	$ 5,744,000	$ 5,077,000
Work-in-process			379,000
Finished goods	5,155,000	5,155,000	3,699,000
Total inventory	10,899,000	10,899,000	9,155,000
Shipping goods to customers, cost	$ 1,500,000	$ 3,000,000